Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2005-10-13
2009-11-03
McAvoy, Ellen M (Department: 1797)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C508S239000, C507S252000, C507S235000, C507S266000, C166S270100, C166S400000, C166S275000, C166S305100
Reexamination Certificate
active
07612022
ABSTRACT:
A method of treating a hydrocarbon containing formation is described. The method may include providing a hydrocarbon recovery composition to the hydrocarbon containing formation. Hydrocarbons in the hydrocarbon containing formation may interact with the hydrocarbon recovery composition. The hydrocarbon recovery composition may include an aliphatic anionic surfactant and an aliphatic nonionic additive. In some embodiments, an aliphatic anionic surfactant may be branched. In other embodiments, an aliphatic nonionic additive may be branched.
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Raney Kirk Herbert
Shpakoff Paul Gregory
Haas Donald F.
McAvoy Ellen M
Shell Oil Company
Vasisth Vishal
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